A Beeble is a magical construct similar to a homunculus, which is used by the researchers of the Tolarian Academy as a convenient, easily summoned demonstration subject. They are small, slightly larger than a fist, have bare, rounded bodies ranging in color from pink to grey blue, and a set of feathered wings. They are permanently, even infuriatingly cheerful, mischievous but not maliciously so, and seemingly indestructible (though they can be unsummoned). Because of their irritating and bewildering nature, students loved to use Beebles in practical jokes, and Teferi once tied a pair to his feet to bounce tremendous distances.
Beebles are based on artist Jeff Miracola's cover for The Duelist where Squee was harrassed by the creatures. Miracola reused them as depiction of souls on the card Equilibrium. The first card to bear the type was Bouncing Beebles from Urza's Legacy. The only other cards with the creature type are Bubbling Beebles from Urza's Destiny and Bursting Beebles from Unglued. The flavor text of that last card claims that "the beebles quit Magic for several years following the release of the Mercadian Masques set."